The system backfired against the Cherries when Josh King scored a late equaliser and Klopp admitted after the comeback win over Stoke his players need more time to work on the system.
With the race for the top four heating up, Liverpool cannot afford any more slip-ups from now until the end of the season.
Dejan Lovren insists Liverpool's defenders can adapt to whatever system Klopp wants to deploy
Jurgen Klopp has explored with three at the back in Liverpool's last two games
But Lovren is confident that Liverpool's defenders can adapt to the system to make it work if needs be.
“Stoke is a similar team to West Brom with long balls, and we played the system quite well in the second half," Lovren told Liverpool's official website.
“I think it’s a perfect mix for us – Matip in the middle, me on the right because I’m right-footed, and Raggy (Klavan) on the left because he’s left-footed. It’s quite a good mix.
Liverpool train ahead of West Brom clash Wed, April 12, 2017
Express Sport brings you all the best snaps as Liverpool train ahead of their clash with West Brom
Play slideshow Liverpool FC via Getty Images 1 of 13
Liverpool have been training ahead of their clash with West Brom this weekend
“But also, if we change formation, we know what we need to do. Again, the vital thing for us is to play football and hopefully we won’t be 1-0 down like against Stoke.
Get Quotes on Home Insurance
“We need to just believe in ourselves. This, I think, is the main thing – self-confidence for every one of us. We know that we can score always.”